CVE-2021-33790: The RebornCore library before 4.7.3 allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of…

PriorityP260critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

2.84%

84.9th percentile

The RebornCore library before 4.7.3 allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of reborncore.common.network.ExtendedPacketBuffer. An attacker can instantiate any class on the classpath with any data. A class usable for exploitation might or might not be present, depending on what Minecraft modifications are installed.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
techreborn	reborncore	<= 3.13.8	—
techreborn	reborncore	>= 3.19.0 < 3.19.5	3.19.5
techreborn	reborncore	>= 4.2.0 < 4.2.10	4.2.10
techreborn	reborncore	>= 4.7.0 < 4.7.3	4.7.3

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

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